/Engine/Source/Editor/Experimental/EditorInteractiveToolsFramework/Public/EdModeInteractiveToolsContext.h
Input handling, these functions forward ViewportClient events to theUInputRouter
bool InputKey ( [FEditorViewportClient](API\Editor\UnrealEd\FEditorViewportClient) * ViewportClient, [FViewport](API\Runtime\Engine\FViewport) * Viewport, [FKey](API\Runtime\InputCore\FKey) Key, EInputEvent Event )